!
! Copyright (C) 2000-2013 A. Marini and the YAMBO team 
!              https://code.google.com/p/rocinante.org
! 
! This file is distributed under the terms of the GNU 
! General Public License. You can redistribute it and/or 
! modify it under the terms of the GNU General Public 
! License as published by the Free Software Foundation; 
! either version 2, or (at your option) any later version.
!
! This program is distributed in the hope that it will 
! be useful, but WITHOUT ANY WARRANTY; without even the 
! implied warranty of MERCHANTABILITY or FITNESS FOR A 
! PARTICULAR PURPOSE.  See the GNU General Public License 
! for more details.
!
! You should have received a copy of the GNU General Public 
! License along with this program; if not, write to the Free 
! Software Foundation, Inc., 59 Temple Place - Suite 330,Boston, 
! MA 02111-1307, USA or visit http://www.gnu.org/copyleft/gpl.txt.
!
subroutine cutoff_sphere()
 !
 use pars,          ONLY:SP
 use wave_func,     ONLY:wf_ng
 use R_lattice,     ONLY:cyl_ph_radius,bare_qpg,nqibz
 implicit none
 !
 ! Work Space
 ! 
 integer ::iq,ig
 real(SP)::dummy
 !
 do ig=1,wf_ng
   do iq=1,nqibz
     dummy=sqrt(1. - cos(bare_qpg(iq,ig)*cyl_ph_radius) )
     if (abs(dummy)<1.E-5) dummy=1.E-5
     bare_qpg(iq,ig)=bare_qpg(iq,ig)/dummy
   enddo
 enddo
 bare_qpg(1,1)=sqrt(2.0)/cyl_ph_radius
 !
end subroutine
